Improvement in carriage-axles



H. KI'LLAM.

- Q Garrag Axle; w N0110,766. Patented Jan. 3, -18'7l.

tn'ted tutrz HENRY KILLAM, OF NEW HAVEN, OONNEOTIOUT.

Letters Patent No. 110,766, date January 3, 1871,

IMPROVEMENT |N- CARRIAGE'AXLES.

The Schedule refene to in these Letters Patent: and making part of the same.

"loWing, when taken in connection wit'h the accompanying drawing and the letters of reference marked thereon, to'be a full, clear, and exact description of the same, and which said drawing eonstitutes part of this speoificatiomnnd represents in'- Figure 1, a longitudinal central section of the 'hub' and axle; and in Figure 2, a transverse section of the axle.

This invention'relates to an improvement in the construction of carriage-axles, the object being to facilitate the lubricating of the -axle und Theinvention consists iu the construction of the axle with an enlargement at theshonlder, which said enlargement sits into the hub, and theaxle constructed With a longitudinal groove upon its upper side running into the said eulargement, with an opening from the outside of the axle into the said groove, so that the lubricating material may be 'poured into the said groove through the said opening.

My invention also consists in combining with the axle,constructed as above, a packing upon the outside of the hub around the enlarged portion of theaxletto prevent the escape of the lubricati-ng material.

A is the axle, at its innerend formed with an enlarged portion, B, andiso as to form a shoulder, a, against which the hub bears;

The said enlarged portion B extends of equal diameter from the shoulder w to a short clistance outside the hub, and i's then run into the square portion D o f the axle.

The enlarged portion Bextends into the hub O, as seen iu fig. 1, so that the bearing of the wheel laterally'comes Within the hub.

Upon the upper side of the axle A, I form a groove,

d, running to near the outer end 'of thehub, and back into the enlarged portion B to a distance outside the hub, where a communication is madeiwith the said groove by boring into the groove and fitting With a screw, b, or other means of closing, as seen in fig. 1.

When it is desirable to lubricate the axle, remove the closing device lun'd pour in the luhricating material until the groove is iilled. Then close the device b, and a suflicient quantity of lubricating material is poured'within the wheel to supply the lubricator for a longer time'than can be placed thcrcon when the wheel is removed, and the bearing-shoulder a, coming within the hub, requires no lubricating material upon the outside.

This prevents the dust or dirt collect-iug around the bearing from absorbing the lubricating material.

To prevent the escape of anyportion of the lubricating material,I make a packing around the enlarged port-ion of the aXle by fitting a cap, E, to 'the inner end of the hub, and within the ca-p I arrange a packing-ring,,lwhich, by the Cap, is held tight around the axle, and thus prevents the possibility of escape of the lubricating material.

By the constructiontlms describecL-all necessity for removin-g the wheel is avoided, andall possibility of dust or grit getting into the axle is prevented.

I claim as my invention- `1. The carriage-axle A, constructed with the eularged portion B and shoulder a within the' hub, and provided with the groove (Z, and communication b with the said groove outside the hub, as and for the purpose described.

2. ,In combination With the axle A and its enlarged portion B within the hub, the packing-cap E, attached to the inner end of the hub, in themanner and for the purpose set forth.

Witnesses: HENRY KILLAM.

A. J. TrBBrrs, J. H. SHUMWAY. 

